Image artifact detection and correction in scenes obtained from multiple visual images
AssigneeSamsung Electronics Co., Ltd.
InventorsElad GRANOT, Nathan Henri LEVY
Life of this patent
Estimating the term…
Abstract
The disclosure provides for globally detecting and correcting unwanted sensor artifacts arising from processing techniques combining multiple visual images into an output image while possessing information relating to a localized area of the image that can be accomplished during scanning of the image and independent of the number of images or the computer processing method used to acquire them.
Claims22
A method comprised of the following steps for detecting and correcting at least one artifact arising from processing multiple visual images depicting a scene:
- combining two or more visual images input from a sensor;
- examining a local area surrounding a reference pixel found substantially within the center of an array based at an identified location within an input image;
- detecting whether an artifact is present by statistically evaluating substantially any difference in light radiation intensity between at least one combination of input images around the reference pixel location;
- and
- performing correction to output a single image that eliminates any one or more detected artifacts appearing in at least one or more of the input images created due to an inconsistency between input images;
- wherein an input image is comprised of at least one array of pixel locations subject to varying light radiation intensity values created by use of different image sensor exposure times.
A visual image formed by carrying out a procedure comprised of the following steps for detecting and correcting at least one artifact arising from processing multiple visual images depicting a scene:
- combining two or more visual images input from a sensor;
- examining a local area surrounding a reference pixel found substantially within the center of an array based at an identified location within an input image;
- detecting whether an artifact is present by statistically evaluating substantially any difference in light radiation intensity between at least one combination of input images to determine whether a pre-defined threshold is exceeded around the reference pixel location;
- and
- performing correction when the threshold is exceeded to output a single image that eliminates any one or more detected artifacts appearing in at least one or more of the input images;
- wherein an input image is comprised of at least one array of pixel locations subject to varying light radiation intensity values created by use of different image sensor exposure times.
16-20. (canceled)
A computer device configured to execute software instructions programmed to process data for carrying out a procedure comprised of the following steps for detecting and correcting at least one artifact arising from processing multiple visual images depicting a scene:
- combining two or more visual images input from a camera sensor;
- examining a local area surrounding a reference pixel found substantially within the center of an array based at an identified location within an input image;
- detecting whether an artifact is present by statistically evaluating substantially any difference in light radiation intensity between at least one combination of input images around the reference pixel location;
- performing correction to eliminate any one or more detected artifacts appearing in at least one or more of the input images;
- and
- performing noise reduction to output a single corrected visual image;
- wherein an input image is comprised of at least one array of pixel locations subject to varying light radiation intensity values created by use of different camera sensor exposure times.
26-30. (canceled)
Dependencies are inferred from the claim text.